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Diodes Incorporated 1.5KE120A-T
- Part No.:
- 1.5KE120A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120A-T.pdf
- Description:
- TVS DIODE 102VWM 165VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,542
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Product details
Overview
1.5KE120A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power lines and signal interfaces. It features a 102V reverse standoff voltage, 114–126V breakdown range at 1mA test current, 165V maximum clamping voltage at 9.1A peak pulse current, and DO-201 axial package. Used in industrial power supplies to absorb lightning-induced surges on 100V bus rails.
For engineers reviewing the 1.5KE120A-T datasheet, 1.5KE120A-T pinout, 1.5KE120A-T application, or 1.5KE120A-T equivalent, this page delivers verified clamping performance, thermal derating behavior, RoHS-compliant lead finish, and direct replacement guidance for legacy 1.5KE-series TVS diodes in high-energy surge environments.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, triggering avalanche conduction when transient voltage exceeds its VRWM of 102V and clamping to ≤165V at IPP = 9.1A under 1.0ms 8/20μs waveform. Its glass-passivated junction ensures stable breakdown tolerance and low leakage (<5μA @ 102V).
The device is rated for -55°C to +175°C junction temperature, with 0.107%/°C voltage temperature coefficient and 5.0W steady-state dissipation at 75°C lead temperature. It meets J-STD-020 Level 1 moisture sensitivity and UL 94V-0 flammability requirements in its transfer-molded epoxy DO-201 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W (1.0ms non-repetitive, defines surge energy handling capability) |
| Reverse Standoff Voltage | 102V (maximum continuous DC operating voltage before clamping begins) |
| Breakdown Voltage Range | 114–126V @ 1mA (guaranteed avalanche initiation window for reliable triggering) |
| Max Clamping Voltage | 165V @ 9.1A (voltage seen by protected circuit during full-rated surge) |
| Peak Pulse Current | 9.1A (maximum transient current it safely diverts without failure) |
| Operating Temperature | -55°C to +175°C (enables use in under-hood automotive or industrial ambient conditions) |
| Leakage Current | <5μA @ 102V (minimizes standby power loss and false triggering) |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with tin-finished leads, 1.12g mass, UL 94V-0 rated epoxy body, and cathode band marking for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node in unidirectional clamp configuration |
| Cathode | High-side surge input terminal | Connected to protected line; conducts avalanche current to anode during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures consistent breakdown voltage tolerance and long-term reliability under thermal cycling |
| 1500W peak pulse rating | Supports IEC 61000-4-5 Level 4 (4kV) surge immunity in 2Ω/12Ω source impedance systems |
| Fast response time (<1ps) | Clamps transients before downstream ICs experience damaging overvoltage stress |
| RoHS-compliant, halogen-free "Green" finish | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm |
| DO-201 mechanical robustness | Withstands 200A non-repetitive forward surge (8.3ms half-sine), enabling use in high-current fault scenarios |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 100V DC input rails in programmable logic controller (PLC) power modules against induced lightning surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and chassis ground to clamp transients above 102V. Use Value: Limits voltage excursion to ≤165V during 9.1A surges, preventing damage to upstream rectifiers and downstream DC-DC controllers. |
Use Scenario: Safeguarding LIN bus interface circuits in BCMs exposed to load-dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on LIN transceiver VCC supply line. Use Value: Absorbs up to 1500W surge energy while maintaining <5μA leakage to avoid battery drain in sleep mode. |
| Telecom Central Office Equipment | Renewable Energy Inverter DC Link |
|
Use Scenario: Secondary surge protection on -48V telecom distribution boards subjected to AC-coupled transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, anode-to-ground to suppress positive-going spikes. Use Value: Clamps 102V standby rail to 165V within picoseconds, preserving integrity of hot-swap controllers and monitoring ICs. |
Use Scenario: DC link overvoltage suppression in solar string inverters where PV array transients exceed 100V. IC Role / Device Role / Timing Role: Shunt protector across DC bus capacitors to limit voltage rise during rapid disconnection events. Use Value: Handles 9.1A peak pulses with 0.107%/°C tempco, ensuring stable clamping across -40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A | Lower 1000W rating; SMA package; 110V standoff; 177V clamping @ 5.7A | Compact surface-mount alternative for space-constrained PCBs; lower energy handling | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 (2kV) |
| 1.5SMC120A | Same 1500W rating and 120V nominal; SMC package; 165V clamping @ 9.1A; identical electrical specs | Surface-mount drop-in replacement requiring footprint redesign; no axial leads | Choose for automated assembly and improved vibration resistance where DO-201 lead form is not required |
Compared with 1.5KE120A-T, SMBJ110A offers smaller size but reduced surge margin, while 1.5SMC120A matches electrical performance exactly in an SMT package-enabling trade-offs between manufacturability, board space, and mechanical mounting requirements.
Availability
1.5KE120A-T is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom infrastructure equipment, and renewable energy inverters requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE120A-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and protection applications.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting industrial, automotive, and telecom systems where reliability under repeated surge stress is critical.
FAQ
What is the difference between 1.5KE120A-T and 1.5KE120CA-T?
The suffix 'C' denotes bidirectional configuration: 1.5KE120CA-T clamps both positive and negative transients symmetrically around 0V, while 1.5KE120A-T is unidirectional with cathode-anode polarity and clamps only positive excursions above 102V. Bidirectional versions lack cathode band marking and exhibit doubled leakage limits for VR ≤10V - not applicable here.
Can 1.5KE120A-T be used in place of 1.5KE120A-B?
Yes - the '-T' and '-B' suffixes indicate packaging only: '-T' is 1k tape-and-reel, '-B' is 1k bulk. Electrical characteristics, DO-201 package dimensions, and marking are identical. Both meet the same JEDEC and Diodes Incorporated specifications; only logistics and handling differ.
What is the thermal derating behavior above +25°C ambient?
Peak pulse power derates linearly above +25°C ambient per the datasheet's derating curve: at +75°C ambient, PPk drops to ~1125W (75% of 1500W). Steady-state power remains fixed at 5.0W up to +75°C lead temperature, beyond which it must be further derated per thermal resistance data.
Is 1.5KE120A-T qualified to AEC-Q101 for automotive use?
No - the standard 1.5KE120A-T is not AEC-Q101 qualified. Diodes offers automotive-grade variants (e.g., 1.5KE120A-Q) with PPAP documentation, IATF 16949 manufacturing, and extended qualification testing. For automotive applications, contact Diodes or Aetrix for the Q-grade version.
1.5KE120A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE120A-T FAQ
1.How can I place an order for 1.5KE120A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120A-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE120A-T reliable?
The price and inventory of 1.5KE120A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE120A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120A-T?
1.5KE120A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120A-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE120A-T?
For technical support, including 1.5KE120A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120A-T requirements.
6.How does Aetrix verify that 1.5KE120A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE120A-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE120A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE120A-T?
All 1.5KE120A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120A-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE120A-T part is unused and in its original packaging.
Return procedure for 1.5KE120A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120A-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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